Suppressed charge recombination aided co-sensitization in dye-sensitized solar cells-based natural plant extracts

Alkali, Babangida; Yerima, Benson J.; Ahmed, Abubakar D.; Ezike, Sabastine C.

doi:10.1016/j.ijleo.2022.170072

Cited by 10 publications

(1 citation statement)

References 34 publications

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“…Synthetic dyes such as ruthenium, osmium, and other metal complex-based dyes were reported as the most stable and effective for dye-sensitized solar cells (DSSC) (Dhonde et al, 2022;Huang et al, 2018). However, synthetic dyes have drawbacks in complex chemical processes, not environmentally friendly or toxic, limited availability, and expensive fabrication (Alkali et al, 2022;Mejica et al, 2022;Yadav et al, 2023). Therefore, we need a sensitizer that is abundantly available, easy to extract, friendly to the environment, and simple and inexpensive to fabricate (Adedokun et al, 2021;Oladeji et al, 2022;Yadav et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

Study of Optical and Electrochemical Properties of Solvent-Dependent Natural Dye Extracted from <i>Rivina humilis</i> L

Aliah¹,

Iman²,

sriwidati³

et al. 2023

J. Ecol. Eng.

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This work aimed to study the natural dye extracted from Indonesian wild plants (Rivina humilis L.) using different solvents. The natural dye was extracted using the maceration method. Three different solvents, namely, aquades, acetone, and ethanol 96%, were used to extract natural dye from Rivina humilis L fruit. The absorbance spectra of the extracted dye were recorded using Ultraviolet-Visible (UV-Vis) spectroscopy. The different spectra of betalain pigment revealed the dye extract's dependence on the solvent. The functional groups of the extracted dye were analyzed using Fourier transform infrared (FTIR) spectroscopy. The adherence of carbonyl and hydroxyl groups from FTIR spectra indicated that this dye could anchor to a semiconducting material, e.g., TiO 2, which was commonly used in dye-sensitized solar cells (DSSC). The electrochemical properties of the extracted pigments were studied through higher occupied molecular orbital (HOMO) and lower unoccupied molecular orbital (LUMO) energy levels. Based on the results, the best performance to construct DSSC was achieved by natural dye adsorption with aquades solvent.

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